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Model Front Rear
STi (04-07)
BS-41 (40/44x29)

BS-21 (36x29)

STi (08-17)
BS-42=BM41 (40/46x29)

BS-22=BM21 (40x29)

STi (2018+)
BS-60 (30/34/38X29.5)-External boot fit

BS-23 (40X29.5)-External boot fit

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Piston Kit (Stainless Steel) for STi (08-17) Rear 2 Pot Caliper (Qty is for 1 Caliper) Brembo EVO caliper pistons Piston Kit (Stainless Steel) for Subaru STi 04-07 Front (1 Caliper)
Piston Kit (Stainless Steel) for STi (08-17) Rear 2 Pot Caliper (Qty is for 1 Caliper)
MSRP (per caliper): $66.67
Sale Price (per caliper): $60.00
You save $6.67!
Piston Kit (Stainless Steel) for 2003+ Mitsubishi EVO 8/9 & 10, Subaru STi 08-17 Front 4 Piston Caliper
MSRP (per caliper): $133.33
Sale Price (per caliper): $120.00
You save $13.33!
Piston Kit (Stainless Steel) for Subaru STi 04-07 Front (1 Caliper)
MSRP (per caliper): $133.33
Sale Price (per caliper): $120.00
You save $13.33!
BS-22P BM-41P BS-41P
Save 10% on STi complete rear axle caliper rebuild components Save 10% on 2008+ STi Complete Rear Rebuild Components - Two Calipers
Save 10% on STi (04-07) Complete Rear Rebuild Components (2 Calipers)
MSRP (2 Calipers): $176.00
Sale Price (2 Calipers): $158.40
You save $17.60!
Save 10% on STi (2008+) Complete Rear Rebuild Components (40mm) - Two Calipers
MSRP (2 Calipers): $176.00
Sale Price (2 Calipers): $158.40
You save $17.60!
BS-21BSP BS-22BSP